More attention must be paid the endangered animals..A. protect B. to protectC. to protecti

问题补充：

More attention must be paid the endangered animals..

A. protect

B. to protect

C. to protecting

D. protecting

答案：

A. protect

B. to protect

(答案→)C. to protecting

D. protecting

解析：考查短语pay attention to的用法。pay attention to中to为介词，后面要接动名词，故选答案C。本题是一个被动句，为了更容易看出考点，可以先还原成主动句：we must pay more attention the endangered animals.这样很容易看出是考pay attention to的用法。